Samenvatting

The Netherlands fire safety regulations require certain types of buildings to have a direct connection between the building fire alarm system and the dispatch centre of the fire brigade. These automatic fire alarm systems are mandatory for example in premises where inhabitants such as small children or elderly people have limited self-evacuation capabilites in case of fire. These automatic fire alarms aim at saving lives by a faster response of the fire brigade. However, the fast majority of these automatic alarms are false. As a result these calls constitute a considerable and undesirable drain on the fire brigade resources. These calls cause unwanted direct costs (salaries) and indirect costs (road accidents due to fire brigade mobilisation) apart from the regular maintenance costs. Up to now no data is available for the costs and benefits of the system of automatic fire alarms. This article describes the results of a study of the automatic fire alarm system in the region Twente. The yearly social costs are calculated at about € 3 million. In order to calculate the benefits all incident reports from automatic fire alarms during a period of 29 months have been investigated. In this period no call form an automatic fire alarm system has occured in which the fire brigade had to deploy its resources for a live saving or evacuation action.